On a certain day, John celebrated his birthday. Two days later, his older twin brother Jacob celebrated his birthday.

Is this even possible? How can it be?

What has no start, end, or centre?

Why is the Hole below a Lock?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

I have branches, but no fruit, trunk or leaves. What am I?

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.